package com.ywgt.springcloud.controller;


import com.ywgt.springcloud.entities.CommonResult;
import com.ywgt.springcloud.entities.Payment;
import com.ywgt.springcloud.lb.LoadBalance;
import lombok.extern.slf4j.Slf4j;
import org.springframework.cloud.client.ServiceInstance;
import org.springframework.cloud.client.discovery.DiscoveryClient;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.client.RestTemplate;

import javax.annotation.Resource;
import java.net.URI;
import java.util.List;

@RestController
@Slf4j
public class OrderController {
    @Resource
    private LoadBalance loadBalance;
    @Resource
    private DiscoveryClient discoveryClient;
    //private static final String PAYMENT_URL="http://localhost:8001";
    private static final String PAYMENT_URL="http://CLOUD-PAYMENT-SERVICE";
    @Resource
    private RestTemplate restTemplate;

    @GetMapping("/consumer/payment/get/{id}")
    public CommonResult getPayment(@PathVariable("id") Long id){
        return restTemplate.getForObject(PAYMENT_URL+"/payment/get/"+id,CommonResult.class);
    }
    @PostMapping("/consumer/payment/save")
    public CommonResult<Payment> create(Payment payment){
        return restTemplate.postForObject(PAYMENT_URL+"/payment/save",payment,CommonResult.class);
    }
    @GetMapping("/consumer/payment/lb")
    public String getPaymentLB(){
        List<ServiceInstance> instances = discoveryClient.getInstances("CLOUD-PAYMENT-SERVICE");
        if(instances==null || instances.size()<=0){
            return null;
        }
        ServiceInstance serviceInstance=loadBalance.instances(instances);
        URI uri = serviceInstance.getUri();
        return restTemplate.getForObject(uri+"/payment/lb",String.class);
    }

    @GetMapping("/consumer/payment/zipkin")
    public String getZipkin(){
        return restTemplate.getForObject("http://localhost:8001/payment/zipkin",String.class);
    }
}
